Laser stabilizing to ytterbium clock transition with Rabi and Ramsey spectroscopy

【摘要】 A cavity-stabilized 578 nm laser is used to probe the clock transition of ytterbium atoms trapped in optical lattice sites.We obtain a Fourier-limited 4.2-Hz-linewidth Rabi spectrum and a Ramsey spectrum with fringe linewidth of 3.3 Hz.Based on one of the spectra,the 578 nm laser light is frequency-stabilized to the center of the transition to achieve a closed-loop operation of an optical clock.Based on interleaved measurement,the frequency instability of a single optical clock is demonstrated to be 5.4×10^-16/^pτ.更多还原

【Abstract】 A cavity-stabilized 578 nm laser is used to probe the clock transition of ytterbium atoms trapped in optical lattice sites.We obtain a Fourier-limited 4.2-Hz-linewidth Rabi spectrum and a Ramsey spectrum with fringe linewidth of 3.3 Hz.Based on one of the spectra,the 578 nm laser light is frequency-stabilized to the center of the transition to achieve a closed-loop operation of an optical clock.Based on interleaved measurement,the frequency instability of a single optical clock is demonstrated to be 5.4×10^-16/?τ.更多还原